Ottoman Empire Era Nazar

A blue glass disc, with concentric rings of white, then light blue, than black, which look like an eye

This eye-shaped amulet, which gained popularity during the Ottoman Empire (1299-1923), is believed to be protection against the Evil Eye. This particular example is thought to have been owned by Bosnian conspirator Muhamed Mehmedbašić, one of the men involved with the assassination of Archduke Franz Ferdinand in Sarajevo in 1914. The assassination led to the start of World War I, and ultimately, the end of the Ottoman Empire.

This particular glass form has been a traditional art in the Mediterranean for thousands of years, and today, it is a popular souvenir for tourists in throughout the region, especially in places like Turkey, Macedonia, Greece, Bosnia, Syria and Lebanon.